Check if the provided wallet address was used in the Fonbnk system
/api/util/check-address
0xdfce2eff134a643953661ed8306145e8023d8f3f
curl -L \ --request POST \ --url 'https://sandbox-api.fonbnk.com/api/util/check-address' \ --header 'x-client-id: YOUR_API_KEY' \ --header 'Content-Type: application/json' \ --data '{"address":"0xdfce2eff134a643953661ed8306145e8023d8f3f"}'
{ "used": true }